The 1787 Shipwreck on Huvadhoo Atoll and the Quarantine to Peros Banhos: Public Health, Maritime Connectivity, and Historical Memory in the Late 18th-Century Indian Ocean

A dramatic depiction of the 1787 shipwreck on Huvadhoo Atoll in the southern Maldives, showcasing a wooden ship breaking apart amidst stormy seas and crashing waves.

The 1787 shipwreck on Huvadhoo Atoll in the southern Maldives and the subsequent quarantine of suspected leprosy sufferers to Peros Banhos Atoll in the Chagos Archipelago reflect a mix of public health concerns, limited medical understanding, and the strategic use of remote islands during the Age of Sail. This event, under Sultan Al-Hajj Hassan Nooraddeenul Iskandhar I (r. 1779–1799), shows why Peros Banhos was chosen, even though it was not truly isolated in the context of 18th-century Indian Ocean navigation.

The 1787 Incident: Shipwreck and Quarantine Decision

In 1787, a Moorish merchant ship (likely from Surat, India, carrying Arab or Muslim traders, crew, and possibly enslaved individuals) struck the reefs of Huvadhoo Atoll. Shipwrecks were common in the Maldives due to its extensive atoll system and treacherous reefs, which posed hazards to vessels navigating the Indian Ocean trade routes. Among the survivors, some were suspected of carrying leprosy (Hansen's disease), a condition deeply feared in pre-modern societies. Leprosy was misunderstood as highly contagious, often seen as a divine punishment or curse, and caused severe social stigma, disfigurement, and isolation. Without antibiotics or effective treatments (which only emerged in the 20th century), the primary response worldwide was segregation to prevent perceived spread.

Maldivian authorities acted decisively:

• Some survivors were repatriated to Surat.

• Others were exiled to remote locations to minimize risk to the main population: Villingili Island in Addu Atoll (southern Maldives) and a place referred to in Maldivian accounts as "Kandhu Atoll", widely interpreted as Peros Banhos Atoll in the Chagos Archipelago (known in Maldivian tradition as Foalhavahi).

This relocation marked one of the earliest documented uses of Peros Banhos as an isolation site for leprosy, introducing or contributing to the disease's presence in southern Maldives atolls (Addu, Huvadhoo) and the Chagos region.

Why Peros Banhos / Chagos? Not Truly "Isolated" in the 18th Century

Modern perceptions label Peros Banhos and the Chagos as extremely remote and isolated, uninhabited today, over 500 km south of the Maldives, and part of a vast marine protected area. However, in the late 18th century, before the Suez Canal opened in 1869, this view is misleading. The Cape Route (around the Cape of Good Hope) was the dominant maritime highway connecting Europe, Africa, the Middle East, India, and Asia.

• Extensive Indian Ocean trade networks flourished during the Age of Sail. Arab, Swahili, Indian, and Moorish merchants (along with European powers like the Portuguese, Dutch, French, and British) routinely crossed the Indian Ocean.

• These routes involved seasonal monsoon winds for sailing, with vessels frequently stopping at islands for water, food (turtles, coconuts), repairs, or shelter during storms.

• The Maldives, with its atolls, served as a key waypoint and resource point.

• The Chagos Archipelago, lying directly south of the Maldives along natural sailing paths, was similarly accessible and known. Maldivian seafarers had long been aware of it (as Foalhavahi), using it occasionally for fishing or navigation.

Peros Banhos was thus strategically remote yet reachable:

• Far enough from populated Maldives to contain disease risks.

• Close enough via established maritime routes (a few days' sail with favorable winds) to transport people without excessive difficulty.

• Uninhabited or sparsely visited, making it ideal for quarantine—similar to how other societies used remote islands (e.g., Moloka'i in Hawaii, Robben Island in South Africa, or Curieuse in the Seychelles) for leprosy isolation.

The choice aligned with broader regional patterns: French colonial authorities (controlling nearby Isle de France (modern-day Mauritius) also began using Diego Garcia) for leprosy quarantine from Isle de France / Mauritius in the late 1780s–1820s, drawn by isolation and beliefs in curative properties of turtle meat.

Modern-Day "Isolation" vs. Historical Connectivity

Today, Peros Banhos appears profoundly isolated due to:

• The shift to steamships and the Suez Canal, which bypassed the Cape Route and reduced reliance on mid-ocean stops.

• In 1787, the Chagos was part of an interconnected Indian Ocean world of trade, migration, and occasional resource use.

• The quarantine decision exploited this connectivity for expulsion while leveraging remoteness for containment. This episode has echoes in modern Maldivian health history. Former Health Minister Ahmed Naseem referenced early leprosy cases tied to a shipwreck during WHO recognition of the Maldives interrupting transmission in 2023 (though some accounts confuse the ship as French).

Why the Link? Maldivian historical accounts (drawn from oral traditions and modern compilations referencing Dhivehi sources) suggest the ship was likely trying to dodge French privateers or navigate cautiously to avoid them. The Indian Ocean was a hotspot for such attacks:

• The Vessel: A Moorish (Arab/Muslim) merchant ship originating from Surat (a major port in Gujarat, India, under Mughal influence but heavily involved in Indian Ocean trade). It carried valuable cargo: gold, spices, textiles, slaves (likely from East Africa or other regions), and six cannons for defense.

  It underscores how historical fears shaped responses to disease in a maritime context. In essence, Peros Banhos was selected not despite its "isolation," but because it was isolated enough for safety yet connected enough via pre-Suez Cape Route sailing paths to serve as a practical quarantine destination in an era when the Indian Ocean was a bustling highway of commerce and human movement.